I also got two modules. Tried 5 different 1GB/2GB cards. Tried both 3.3 and 5V.Cards formatted FAT16 with SD's utilitie (and others)Example-files copied one by one.. and in 'bulk'. Tried renaming files to 0.ad4 .. 00.ad4 and 000.ad4 - NOTHING!Verified with osc.scope that timing for reset , clk and dta is exactly according to datasheet.NO sound - (not even a tiny litte 'pip')

--busy-line show some kind of life as it drops for a while after sending commands.

... Time to trash this shit ? or is there a "magic" SD-card out there?

I had better luck to make a player with shiftregister 74xx595 and a R2R net.This plays 8bits PCM files at speeds ut to 16Ksamples/sec. (interruptdriven)Audacity converts to my req. format without a problem.

knut, Narvik, Norway

EDIT 29.3.I am waiting for new memory cards 128K and 256K. (since they are not to be found in Norway, they will cross the globe..)

Have you tried the module as a stand alone and not connected to the arduino?

The module only likes SanDisk MicroSD cards. It is a little tricky getting the microSD card into the slot properly. You have to open up the card slot and place it into position. You can not just slide it in from the end.

Mine was not working with the arduino and I tried it in stand alone and got it to work. Reference wiring diagram in the previous posts. I then was successful in getting it to work with the arduino.

ive been trying to get the module working for some time today... and finally got it making sounds.thx for all the information in this post, was very helpful!

except for the issue ive faced! Everything was hooked up correctly, formatted the sd-card (SanDisk 64mb) in fat16.. etc..

But nothing happened.. I only noticed that the busyPin-LED was glowing all the time... first i thought this might be normal, but it is not!Even if it did react to buttons ive pressed or code changes iv made! But at that point of trying i didnt know that it aint normal, so i started looking for the problem: - formated the SD-card x-times - soldered the jumper to 5v tested, and then again back to 3.3v - destroyed a in ear headphone to get the speaker - took differend .ad4 files - hooked everthing up again - used different code snippets - readed every post ive found -....

As a last desperated try i was just pressing slighty against the bottom side(between pin 8 and 9) of the sd-card, while it was mounted into the slot.AND, some reaction, the busyPin-LED was turning off.. as i pressed some buttons i noticed sounds...!Finally it worked for me..

So my conclusion is, that the SD-card might not have decent contact to the module, even if it looks fitted!

I´m trying to conect the module like point 8.8 of datasheet. Reset works but when a press play, led go off and i heard a noise for 1-2 second, then stop and led go on. I try with 4 differents sd (two of 2gb kingstom and scandisk, one of 256mb and other of 4gb)

I try with 2 speakers of 8 ohms and 3w and 1w, and somes buzzer and little speakers. I try with mnay audio example form hear an otrher from youtube

hi thanx 4 adding this library it seems that it is going to help us sooo much in our project XDbut i need to learn more and understand more things about this library i bought this https://www.sparkfun.com/products/11125i need to control playing the content of the sd card using arduinofor example play song 1 when some action happens or song 2 when other action happens could u help me ^___^i will be sooo thankful

I´m trying to conect the module like point 8.8 of datasheet. Reset works but when a press play, led go off and i heard a noise for 1-2 second, then stop and led go on. I try with 4 differents sd (two of 2gb kingstom and scandisk, one of 256mb and other of 4gb)

I try with 2 speakers of 8 ohms and 3w and 1w, and somes buzzer and little speakers. I try with mnay audio example form hear an otrher from youtube

I think ALL problems with this module are because of the power supply. SD cards need more than 3.3V to work (it's in their specification).

Hello!I have a question! How to manually change modes on vtv020-sd-16p,all ekys are on/off(loop),key 5 group of voice...Thanks!!!

I want to ask which control mode module do you use?for example ,If you buy 2-wire series mode can not us key 5 group of voice,control mode is fixed when we program main chip,and you need tell supplier what you want,i think they will give you correct control mode module.

Please. On eBay the supplier tells little. This is typical and notice it says "MP3":http://www.ebay.com/itm/U-disk-audio-player-SD-card-voice-module-MP3-Sound-module-WTV020-SD-16P-Arduino/310629013078?_trksid=p2045573.m2042&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D27%26meid%3D7644561902605214505%26pid%3D100033%26prg%3D1011%26rk%3D2%26sd%3D271024886800%26

Nothing about mode. This one also uses mini-SD I don't find easily, nor adapter mini to micro-SD so this module says 'problems' to me.

I am having problems enough with the VS1003 modules I got. Yes there is software for other modules with the same chip that do almost what I want. In the meantime I have someone who wants dozens of Arduino-controlled sound players.

What I find that "works out of the box" is expensive and the rest are take your chances when buying and see how many hours before you get it to work if ever. Does that sound like any way to sell a lot of anything here?

HELLO,this page helped me alot when I started using WTV020. i had used it as both stand alone mp3 player and interfaced with arduino (using arduino UNO and arduino mega 2560 both!). it was working pretty well. but now when I am trying to play the module, all I hear is a slight beep. nothing else. thje connections are pretty fine and so is SD card. can anyone suggest me what can be the problem? How can i get it working again! please help me out.